Canister base



FIG. 1 is a top left front perspective view of a canister base, showing my new design;

FIG. 2 is a front elevational view thereof; the rear elevational view being a mirror image;

FIG. 3 is a right side elevational view thereof; the left side elevational view being a mirror image;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a cross-sectional view thereof taken along Line 5--5 of FIG. 2. 

The ornamental design for a canister base, as shown and described. 